Exploring the relationship between upwelling intensity and socio-ecological attributes of marine exploitation areas for benthic resources (MEABRs), along the southern Humboldt Current system.

The Eastern Boundary Upwelling Systems (EBUS) sustains some of the most productive marine systems on Earth. Within each of these systems, the upwelling process exhibits spatial and temporal variation resulting in marked differences in upwelling intensity and seasonality along extensive coastlines. The study of this variation is well needed, given the magnitude of the services provided by upwelling, and the impending impacts of global warming on EBUS.

The importance of upwelling conditions as drivers of feeding behavior and thermal tolerance in a prominent intertidal fish.

Upwelling, as a large oceanographic phenomenon, increases coastal productivity and influences all levels of biological complexity. Despite decades of research on it, much remains to be understood about the impact of upwelling on the feeding behavior and thermal tolerance of important groups such as fish. Hence, our aim was to investigate how upwelling conditions modify the feeding behavior and thermal tolerance of a prominent intertidal fish, Girella laevifrons.

The influence of upwelling on key bivalves from the Humboldt and Iberian current systems.

Eastern Boundary Upwelling Systems (EBUS) deliver cold, nutrient-rich waters, influencing coastal biota from the molecular to the ecosystem level. Although local upwelling (U) and downwelling (DU) conditions are often known, their influence on body attributes of relevant species has not been systematically compared within and between EBUS (i.e.

Upwelling enhances seaweed nutrient quality, altering feeding behavior and growth rates in an intertidal sea urchin, Loxechinus albus.

Upwelling systems deliver nutrient-rich water into coastal ecosystems, influencing primary productivity and potentially altering seaweed-herbivore interactions. Upwelling bottom-up effects on distinct trophic levels are well-known. However, their influence on seaweed biomolecules and on algae-herbivore interactions and growth are less known.

Parasitism by metacercariae modulates the morphological, organic and mechanical responses of the shell of an intertidal bivalve to environmental drivers.

Environmental variation alters biological interactions and their ecological and evolutionary consequences. In coastal systems, trematode parasites affect their hosts by disrupting their life-history traits. However, the effects of parasitism could be variable and dependent on the prevailing environmental conditions where the host-parasite interaction occurs.

Artificial light at night (ALAN) causes variable dose-responses in a sandy beach isopod.

Artificial Light at Night (ALAN) is expanding worldwide, and the study of its influence remains limited mainly to documenting impacts, overlooking the variation in key characteristics of the artificial light such as its intensity. The potential dose-response of fitness-related traits to different light intensities has not been assessed in sandy beach organisms. Hence, this study explored dose-responses to ALAN by exposing the intertidal sandy beach isopod Tylos spinulosus to a range of light intensities at night: 0 (control), 20, 40, 60, 80 and 100 lx.

Morphological, physiological and behavioral responses of an intertidal snail, Acanthina monodon (Pallas), to projected ocean acidification and cooling water conditions in upwelling ecosystems.

Ocean acidification (OA) is expected to rise towards the end of the 21st century altering the life history traits in marine organisms. Upwelling systems will not escape OA, but unlike other areas of the ocean, cooling effects are expected to intensify in these systems. Regardless, studies evaluating the combined effects of OA and cooling remain scarce.

Ocean acidification alters anti-predator responses in a competitive dominant intertidal mussel.

Widespread intertidal mussels are exposed to a variety of natural and anthropogenic stressors. Even so, our understanding of the combined influence of stressors such as predation risk and ocean acidification (OA) on these species remains limited. This study examined the response of the purple mussel (Perumytilus purpuratus), a species distributed along Pacific southeastern rocky shores, to the effects of predation risk and OA.

Exposure to artificial light at night (ALAN) alters RNA:DNA ratios in a sandy beach coleopteran insect.

Coastal habitats worldwide, including sandy beaches, are becoming increasingly exposed to Artificial Light at Night (ALAN). Despite the spread of this global stressor, research assessing ALAN potential impacts remain scarce, particularly at the molecular level. This study addressed this gap by assessing the influence of ALAN on the physiological condition of the sandy beach insect Phalerisida maculata Kulzer (Coleoptera, Tenebrionidae).

The combined effects of ocean acidification and warming on a habitat-forming shell-crushing predatory crab.

In mid rocky intertidal habitats the mussel Perumytilus purpurarus monopolizes the substratum to the detriment of many other species. However, the consumption of mussels by the shell-crushing crab Acanthocyclus hassleri creates within the mussel beds space and habitat for several other species. This crab uses its disproportionately large claw to crush its shelled prey and plays an important role in maintaining species biodiversity.

Context-Dependence in parasite effects on keyhole limpets.

Parasites alter the reproductive performance of their hosts, limit their growth, and thereby modify the energy budget of these hosts. Experimental studies and theoretical models suggest that the outcome of the host-parasite interactions could be determined by ecological factors such as food availability levels in the local habitats. Nutrient inputs may affect the host's food resource availability with positive or negative effects on parasite infection rates and tolerance of infection, however this has not been specifically evaluated in natural systems.

Basic suture techniques for medicine students: comparative results according to training by surgeons versus peers.

Objetivo: Comparar la adquisición de habilidades básicas de sutura en estudiantes de medicina según la enseñanza práctica por cirujanos o por pares.

MÉtodo: Estudio preexperimental antes y después. Se realizó un taller práctico de suturas para 46 estudiantes de medicina de octavo semestre de la Universidad de Concepción, entre noviembre y diciembre de 2017.

Role of temperature and carbonate system variability on a host-parasite system: Implications for the gigantism hypothesis.

Biological interactions and environmental constraints alter life-history traits, modifying organismal performances. Trematode parasites often impact their hosts by inducing parasitic castration, frequently correlated with increased body size in the host (i.e.

Seawater-temperature and UV-radiation interaction modifies oxygen consumption, digestive process and growth of an intertidal fish.

UV-radiation (UVR) and temperatures have increased substantially over recent decades in many regions of the world. Both stressors independently have shown to affect the metabolism and growth in fish. However, because increase of both stressors are occurring concomitantly, to better understand their influences on marine species, their combined effects were evaluated.

Reliability of Nasofacial Analysis Using Rhinobase® Software.

Objective: Rhinoplasty is a constant challenge for the surgeon, where the correct evaluation of facial aesthetic parameters allows harmonic changes appropriate for each patient. The aim of this study was to compare the preoperative and postoperative results of nasofacial analysis, performed by Rhinobase® software (indirect anthropometry) compared with direct anthropometry (caliper), in patients undergoing aesthetic rhinoplasty.

Methods: The authors assessed the reliability of using Rhinobase® software for measuring nasofacial characteristics in 20 individuals (18 F, 2 M).

Increased parasitism of limpets by a trematode metacercaria in fisheries management areas of central Chile: effects on host growth and reproduction : management areas and parasitism.

The rapid increase in body size and abundance of most species inside Management and Exploitations Areas for Benthic Resources (MEABRs) has led to the proposal of these areas as a good complement for achieving the conservation objectives of Marine Protected Areas (MPAs). However, when evaluating MEABRs and MPAs as conservation and/or management tools, their impact upon parasite populations has rarely been considered, despite the fact that epidemiological theory suggests an increased susceptibility to parasitism under high population abundance. We evaluated the effects of MEABRs on the parasite abundance of Proctoeces lintoni and its impact on the growth of the host limpet Fissurella crassa in central Chile.

[High voltage electrical burns as a risk factor for mortality among burn patients].

Background: Electrical burns are associated with complications and may aggravate burned patients.

Aim: To evaluate the effect of electrical burns in mortality and length of stay in a critical care unit for burn patients.

Material And Methods: Retrospective analysis of medical records of 182 patients aged 15 to 90 years, admitted to an intensive care unit for burn patients.

[Long-term survival in carcinoid tumour of the appendix. An analysis of 8903 appendectomies].

Introduction: Appendiceal carcinoids are the most frequent tumors of the appendix and are usually detected as an incidental finding in the final pathology report. The aim of this study was to evaluate the clinical and pathological characteristics, surgical treatment and long-term survival in patients with an appendiceal carcinoid tumor.

Material And Methods: We performed a retrospective study of patients treated from 1980 to 2007 with a pathological diagnosis of appendiceal carcinoid tumor.

Vasomotion in human umbilical and placental veins: role of gap junctions and intracellular calcium reservoirs in their synchronous propagation.

Vasomotion was characterized using human placentae vessel rings; force displacement transducers recorded isometric contractions. Umbilical vein rings display rhythmic contractions occurring with a frequency of 1.47+/-0.

[Congenital malformations among offspring of diabetic women].

Background: The risk of congenital malformations is two to three times higher among women with diabetes mellitus before pregnancy. Gestational diabetes is emerging as a risk factor for malformations.

Aim: To study the rate and type of congenital malformations among offspring of women with pre-gestational or gestational diabetes.